Electric fan



FIG. 1 is a front elevational view of an electric fan showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof, the left side being a mirror image of that shown;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an enlarged top plan view of the disc on the grill of the fan in FIG. 1 thereof, shown separately for clarity of illustration; and

FIG. 7 is side elevational view of FIG. 6. 

The ornamental design for an electric fan, as shown and described. 